Draft marks, by showing how low a ship is sitting in the water, make it possible to determine displacement.
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).